Waterproofing construction for parapet walls



E. J. WALSH WATERPROOFING CONSTRUCTION FOR PARAPFIT WALLS April 25, 1939.

Filed Nov. 9, 1938 A ttorneys Patented Apr. 25, 1939 NT OFFICE WATERPROOFING CONSTRUCTION FOR PARAPET WALLS Edward J. Walsh, Peekskill, N. Y. Application November 9, 1938, Serial No. 239,705

4 Claims.

Thisinvention relates to water-proofing construction for parapet walls being an alternate method of sealing to that set forth in my application for United States patent filed August 30, 1938, and Serial No. 227,574, and which will prevent leaks between a roof flashing and the parapet wall and further any water striking the inner and outer tiers of bricks and tending to work its way through joints between said bricks will be caught and redirected to the outer faces of the wall.

Another object of this invention is .the provision of longitudinally arranged fibrous elements to be laid in the joints between the bricks and resting on the drain troughs for absorbing moisture and conveying water to said troughs within the wall construction andwhen deteriorated will leave in the mortar joints channels leading to said troughs through which water may pass to reach the troughs and be carried thereby to the outer face of the wall.

With these and other objects in view, the invention consists in certain novel features of construction, combination and arrangement of parts to be hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be had to the following de-- scription and accompanying drawing, in which Figure 1 is a fragmentary transverse sectional view of a parapet wall and showing a roof construction connected thereto and having built therein a waterproof construction forming the subject matter of the present invention.

Figure 2 is a fragmentary perspective view'illustrating a sealing strip forming the subject matter of the copending application above referred to with a fibrous element associated therewith and forming a part of the present invention.

Figure 3 is a fragmentary perspective view 11- lustrating a channeled sealing cap.

Figure 4 is a fragmentary vertical sectional view showing the sealing strip embedded in a joint of the parapet wall and drawn on an enlarged scale with the fibrous element associated therewith.

Referring in detail to the drawing, the numeral 5 indicates a parapet wall of a conventional construction and 6 a roof construction tied into the parapet wall. In order to seal the connection'between the roof construction and the parapet wall a flashing 1 is provided and which extends to overlie a portion of the roof and also to lie against a vertical face of the parapet wall. Usually this flashing extends a considerable distance up the vertical face of the parapet wall from the roof construction as will be apparentsin Figure 1. To effect a seal between the vertical face of the parapet wall and the flashing I "the present invention is employed which also will act to check any seepage or passing of water or moisture longitudinally through the wall by way of the'joint between the bricks of said wall and to redirect the water to the outer faces of the parapet wall.

As will be seen in Figure l, the parapet wall is made up of outer, intermediate and inner tiers of bricks held assembled in wall construction by mortar joints. Throughout the construction of the parapet wall it is common at. frequent intervals in the wall construction to reverse the position of certain of the bricks so that the bricks which have their positions reversed will extend into a pair of the tiers and may be termed as header bricks and are indicated by the character A.

In the present invention I propose to lay in the parapet wall, while under construction waterproof sheets 8 and 9 and preferably between the outer and intermediate tiers of the bricks. The waterproof sheets 8 and 8 have overlapping relation as will be clearly seen in Figure l, the waterproof sheets 9 being set forth in my United States Letters Patent 2,085,618 and the waterproof sheets 8 being set forth in the above-referred to copending application.

One of the waterproof strips 8 is shown in detail in Figure 2 and has secured to opposite faces thereof perforated anchoring elements l0 certain ones of which have integral therewith troughs H in which wicks I! are located. It is to be understood that the anchoring ele- .ments III are arranged horizontally'in joints between the tiers of bricks to'prevent shifting and displacement of the waterproof sheets 8 by being embedded in the mortar of the joints. The troughs ll extend to the outer face of the parapet wall so as to-drain from the wallany moisture that may seep into the joints to the outer face of said wall.

Resting on the anchoring strips l0 and extending longitudinally of the wall are fibrous elements l3 which will become embedded in the mortar joints during the construction of the parapet wall and extend parallel to the face of the waterproof sheets 8 next to the outer face' ofthe parapet wall. The purpose of the elements I; is to absorb and convey to the troughs ll moisture and water and, of course, eventually will deteriorate and will leave in the mortar channels leading to said troughs so that water which may have seeped into the mortar joints will be conveyed to the troughs and redirected thereby to the outer face of the parapet wall.

In a parapet wall of the construction shown in Figure 1 it will be advantageous to carry the waterproofing construction some distance above the roof and where certain of the header bricks A are set into the wall construction so as to extend both into the intermediate and inner tiers of the bricks. Where the header bricks A occur waterproof sheets l4 and I5 are employed. The sheets l4 and I5 extend horizontally through the mortar joints above the header bricks A as will be apparent in Figure 1 and the waterproof sheet 14 extends through the inner face of the parapet wall and is turned downwardly and overlapped with the flashing strip 1, while the waterproof sheet I5 is turned downwardly through mortar joints to overlap the waterproof strips 8. The waterproof strips I4 and I5 are extended vertically in close relation within mortar joints occurring between header bricks B and bricks of the inner tier and have placed thereover a channeled cap l6 of waterproof material similar to the material employed in the construction of the waterproof sheets 8, 9, II and I5 and as specifically set forth in my United States patent above referred to.

Through the use of the waterproof sheets l4 and I5 and the cap l6 any moisture or water which may work inwardly of the parapet wall construction by way of the mortar joints will be checked and directed downwardly and taken up by the fibrous elements l3 and conveyed to the wicks of the troughs ll whence the water will be disposed of through the outer face of the parapet wall. Further, by having the waterproof sheet ll overlap the flashing 1 driving rains and the like striking the inner face of the parapet wall will be prevented from working in between said inner face and the flashing 1.

Thus it will be seen that any water striking the inner or outer tiers of bricks will be caught if working its way between the bricks and redirected to the outer face of the inner tier of bricks or to the outer face of the parapet wall.

It is believed that the foregoing description, when taken in connection with the drawing, will fully set forth the construction and advantages of this invention to those skilled in the art to which such invention relates so that further detailed description will not be required.

What I claim is:

1. In a parapet wall construction having a. roof construction tied therein and provided with a flashing engaging the inner face of said wall construction, waterproofing sheets arranged in mortar joints of the wall construction and having waterproof connections with each other and one of said sheets extending outwardly of the wall construction and overlapping the flashing, an-

choring sheets secured to opposite faces of certain of said waterproofing sheets and embedded in mortar joints of the wall construction, and troughs integral with certain of said anchoring sheets, and extending to the outer face of the wall construction.

2. In a parapet wall construction having a roof construction tied therein and provided with a flashing engaging the inner face of said wall construction, waterproofing sheets arranged in mortar joints of the wall construction and having waterproof connections with each other and oneof said sheets extending outwardly of the wall construction and overlapping the flashing, anchoring sheets secured to opposite faces of certain of said waterproofing sheets and. embedded in mortar joints of the wall construction, and troughs integral with certain of said anchoring sheets and extending to the outer face of the wall construction, and including wicks, and fibrous elements laid across the anchoring sheets within the mortar joints of the wall construction to absorb and convey to the troughs moisture or water for redirecting by said troughs to the outer face of the wall construction.

3. In a parapet wall construction having a roof construction tied therein and including outer, intermediate and inner tiers of bricks and provided with header bricks extending into pairs of said tiers, waterproofing sheets arranged in joints between the outer and intermediate tiers, anchoring sheets carried by certain of said sheets and arranged horizontally in the wall construction and within the mortar joints thereof and certain of said anchoring elements including troughs extending to the outer'face of the wall construction, companion waterproofing sheets arranged to overlie the mortar joints, the header bricks and one of said sheets extending down- 4 wardly between the outer and intermediate tiers of bricks and having overlapping relation with the first-mentioned waterproofing sheets and the other companion waterproofing sheet extending outwardly of the inner face of the wall construction and overlapping a flashing of the roof construction, said companion strips having portions thereof arranged vertically between the intermediate and inner tiers of bricks and in engagement with each other, and capping means I for the last-named portions of the companion waterproofing sheet.

4. In a parapet wall construction having a roof construction tied therein and including outer,

intermediate and inner tiers of bricks and Drovided with header bricks extending into pairs of said tiers, waterproofing sheets arranged in joints between the outer and intermediate tiers, anchoring sheets carried by certain of said sheets and arranged horizontally in the wall construction and within the mortar joints thereof and certain of said anchoring elements including troughs extending to the outer face of the wall construction, companion waterproofing sheets arranged to overlie the mortar joints, the header bricks and one of said sheets extending downwardly between the outer and intermediate tiers of bricks and having overlapping relation with the first-mentioned waterproofing sheets and the other companion waterproofing sheet extending outwardly of the inner face of the wall construction and overlapping a flashing of the roof construction, said companion sheets having portions thereof arranged vertically between the intermediate and inner tiers of bricks and in engagement with each other, and a channeled capping strip arranged to receive therein the lastnamed portions of the companion water-proofing sheets.

EDWARD J. WALSH. 

